The main impact was the wars impact
<h2><em>What</em><em> </em><em>the</em><em>?</em><em> </em><em>I</em><em> </em><em>can't</em><em> </em><em>understand</em><em> </em><em>your</em><em> </em><em>quest</em><em> </em><em>tho</em><em> </em><em>:</em><em>\</em></h2>
I believe it was the Chinese, because at that time southeastern China had a poor economy.